Standardize usage of virtual/override/final in chrome/browser/extensions/

chrome/browser/extensions/api/push_messaging/push_messaging_invalidation_handler.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROME_BROWSER_EXTENSIONS_API_PUSH_MESSAGING_PUSH_MESSAGING_INVALIDATION_HANDLER_H_
 #define CHROME_BROWSER_EXTENSIONS_API_PUSH_MESSAGING_PUSH_MESSAGING_INVALIDATION_HANDLER_H_
 
 #include <map>
 #include <set>
 #include <string>
@@ skipping 18 matching lines @@
 // received.
 class PushMessagingInvalidationHandler : public PushMessagingInvalidationMapper,
                                          public syncer::InvalidationHandler {
  public:
   // |service| and |delegate| must remain valid for the lifetime of this object.
   // |extension_ids| is the set of extension IDs for which push messaging is
   // enabled.
   PushMessagingInvalidationHandler(
       invalidation::InvalidationService* service,
       PushMessagingInvalidationHandlerDelegate* delegate);
-  virtual ~PushMessagingInvalidationHandler();
+  ~PushMessagingInvalidationHandler() override;
 
   // PushMessagingInvalidationMapper implementation.
-  virtual void SuppressInitialInvalidationsForExtension(
+  void SuppressInitialInvalidationsForExtension(
       const std::string& extension_id) override;
-  virtual void RegisterExtension(const std::string& extension_id) override;
-  virtual void UnregisterExtension(const std::string& extension_id) override;
+  void RegisterExtension(const std::string& extension_id) override;
+  void UnregisterExtension(const std::string& extension_id) override;
 
   // InvalidationHandler implementation.
-  virtual void OnInvalidatorStateChange(
-      syncer::InvalidatorState state) override;
-  virtual void OnIncomingInvalidation(
+  void OnInvalidatorStateChange(syncer::InvalidatorState state) override;
+  void OnIncomingInvalidation(
       const syncer::ObjectIdInvalidationMap& invalidation_map) override;
-  virtual std::string GetOwnerName() const override;
+  std::string GetOwnerName() const override;
 
   const std::set<std::string>& GetRegisteredExtensionsForTest() const {
     return registered_extensions_;
   }
 
  private:
   void UpdateRegistrations();
 
   base::ThreadChecker thread_checker_;
   invalidation::InvalidationService* const service_;
   std::set<std::string> registered_extensions_;
   syncer::ObjectIdSet suppressed_ids_;
   PushMessagingInvalidationHandlerDelegate* const delegate_;
   std::map<invalidation::ObjectId,
            int64,
            syncer::ObjectIdLessThan> max_object_version_map_;
 
   DISALLOW_COPY_AND_ASSIGN(PushMessagingInvalidationHandler);
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_API_PUSH_MESSAGING_PUSH_MESSAGING_INVALIDATION_HANDLER_H_